import org.junit.jupiter.api.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


import java.util.stream.Stream;

public class daodaodao {
    @Test
    public void test() {
//        Integer[] arrs = {1, 2, 3, 4};
//        Stream<Integer> stream = Stream.of(arrs);
//        stream.filter(arr -> arr % 2 == 0).map(arr->arr*2).forEach(arr -> {
//            System.out.println(arr);
//        });


        Logger logger = LoggerFactory.getLogger(daodaodao.class);
        logger.debug("debug:{},---{}", "One", "Two");
        logger.info("info");
        logger.error("error");
        logger.warn("warn");


    }
}
